Steam-boiler



(No Model.) 3 She1zs-Sheet 1.

- F. SOMMER.

STEAM BOILBR.

No. 459,463. .2. Patented Se t. 15,1891.

@Af/Q .11 QM@ `3 Sheets-Sheet 1?. SOMMER STEAM BUILER -Pntented Sept. 15, 1891.

3 Sheets-Sheet 3.

(No Model.)

F. SOMMER.

STEAM BOILBR.

Patented Sept. 15, 1891.

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UNT-TED STATE-s PATENT OFFICE.

FRANK SOMMER, OF BRONAUGH, MISSOURI.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 459,463, dated September 15, 1891.

Application filed March 2, 1891. Serial No. 383,444. (No model.)V

T0 all whom, it may concern:

Be it known that I, FRANK SOMMER, of Bronaugh, Vernon county, Missouri, haveinvented certain new and useful Improvements 1u Steam-Boilers, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to steam-boilers to be used for supplying steam under pressure to engines for steam-heating and for various o ther purposes; and the objectsof my inventlon are to produce a boiler which shall be non-explodable and highly economical in the use of both water and fuel and which shall also be stronger and more durable than any boilers heretofore produced. Furthermore,

to produce a boiler which shall' not be'liable to burn out and other injury due to the presence of sediment and which shall present a large surface to the action of the furnace.

To the above purposes my invention conslsts in certain peculiar and novel features of construction and arrangement, as hereinafter described, and pointed out in the appended claims.

In order that my invention may be fully understood, Iwill proceed to describe it with reference to the accompanying drawings, in which- Figure 1 is a front elevation of my improved steam-boiler, the front wall of the setting-being removed. Fig. 2 is a transverse vertical section of the same on the line 2 l2 of Fig. 1, the inlet-pipe 14 being shown at 14c as partiallyA broken away to expose the outletpipe 14 to view. Fig. 3 is a longitudinal section of the boiler on the line 3 3 of Fig. 2.`

Fig. 4 is a detached perspective view of one of the water-tubes and its inclosed fuel or iire tube.

In the said drawings, 1 designates the seting or masonry work in which the boiler is placed. As shown in the drawings, this casing is of a general rectangular form,l inclosing in its upper part a chamber 2 for the boiler and having in its lower part an ash-pit or furnace-chamber 3. This precise form of the casing or setting is that which is found most advantageous; but such changes as particular location of the boiler may make desirable may be made without departing from the essential spirit of the inventron. In the lower part of the front wall of the setting is placeda iire-dooropeningl, and j ustbelowsaid 5 5 opening an ash-pit door 5, while a bridge-wall 6, extending across the bottom of the setting and forming the rear wall of the ash-pit, is provided with a draft-opening 7. The middle portion 8 of the rear wall of the setting is inclined downwardly, as shown, to receive the rear portion of the boiler. to be hereinafter.

described, and a draft-chamber 22 extends through the point of juncture of the, lower portion 8 with the upper end of the portion 65 12 ofthe wall. Agrate 9, of any suitable orl preferred type, is located directly above thefy ash-pit 8 and supplies the heat for generating f are of malleable iron or boiler-iron, 'and eaclr is preferably of approximately oblong rectangular form, and is inclosed upwardly from front to rear, as shown. The front edge of the lower chamber lO is supported upon the bridge-wall 6, while the rear edge is supported in the front of the rear wall of the setting at the juncture of the inclined portion 8 with the vertical lower portion 12 -of the back of the set- 85 ting. The front edge of the upper chamber 11 is supported upon the upper part of the front Wall of the setting 1, adjacent to the stackopening 21, to which the uptake 21 is applied,

upper end of the inclined portion S,the upper end of the said inclined portion protruding into the boiler-chamber 2 of the setting sufficiently to properly support this portion of the upper casing 11. occupies an inclined position of about fifteen or twenty degrees, for a purpose to be presently explained. The front Wall of the lower chamber 10 is formed with a 1nan-hole,which is normally hermetically closed by a suitable cover 13, and by removing which access can be had to the interior of the boiler for cleaning the same with a suitable scraper. A pipe or tube 14 is connected at its rear end to the while its rear portion is supported upon the 9o The boiler as a whole thus IOO chamber 10.

'the boiler of water when said boiler is to be cleaned or inspected. The upper chamber l1 is provided with a suitable steam-dome 16, which is connected to the upper rear portion of the said chamber, preferably at or near its mid-length, and which protrudes upward through a suitable aperture in the top of the setting 1. The usual steam-supply pipe is connected to the dome 16, and thus live dry steam is supplied Ato the engine or other apparatus in which the steam is to be used. The lower chamber 10 is connected with the upper chamber 11 by a number of watertubes 17, the lower ends of which are riveted to the upper side or top of the lowerchamber 10, While their upper ends are similarly connected to the under side or bottom of the upper chamber 1l. These water-tubes thus establish communication between the interiors of the two chambers 10 and 1l and permit a freeA circulation of water through the boiler. Within each of these water-tubes 17 is inclosed a flue 1S, extending longitudinally through said water-tubes, and attached each at its lower end to the bottom ict the lower The upper end of each of these fines is similarly connected to the top of the upper casting or chamber 1l, and it will thus be seen that each tlue extends through the lower and upper chambers 10 1l, and is open both at its lower and upper ends. The heat and other products of combustion tirst come into contact with the outer surfaces of the water-tubes 17, so as to heat the water therein, I

I into the interior of the lower chamber 10. A

water supply or inlet pipe 14C is connected at its inner end by a bend 14Eb to the lower end of one of the pipes 19, and extends thence outward beneath the grate 9. Thus the water will enter through the pipe ltfl'and bend 14" and flow upward through one of the pipes 19, through the bend 20, and thence downward through the companion pipe 19 and into the interior .ot the boiler.

The water-circulation is thus greatly facilitated and the feed-water is highly heated before entering the boiler.

From the above description it will be seen that I have provided a simple and durable Steam-boiler, in the operation of which the maximum degree of heat is utilized, and in which also a constant and rapid circulation of water is insured, thereby producing a full and constanthead of steam. There is no possibility of explosion, as the water is always in the tubes 17, and there is no danger of burning out the boiler because the heat first strikes the upper chamber and tubes. The boiler is virtually self-cleaning, and is extremely eco nomical both in use of water and fuel.

Having thus described my invention, what I claim as new therein, and desire to secure by Letters Patent, is-

1. An improved steam-boiler comprising an upper and a lower water-chamber, a pair of water-tubes, one of said tubes opening at its lower end into the upper part of the lower chamber and both of said tubes entering the upper chamber, a pair of elbows connecting the upper ends of the tubes, and a watersupply pipe connected to the lower end of one of the tubes at a point within the lower chamber, substantially as set forth.

2. An improved steam-boiler comprising a suitable setting or casing, a bridge-wall located in the bottom of said setting and provided with a draft-opening below the grate, a grate su pported partially above said bridge- Wall, and an inclined boiler composed of an upper and lower water-chamber and heatingtlues connecting and passing through said chamber, substantially as set forth.

3. An improved steam-boiler comprising a suitable casing or setting having an inclined rear wall provided with a draft-passage 22, a bridge-wall having a draft-opening below the grate, an upper and a lower inclined' waterchamber extending, respectively, above and upon the bridge-wall and across the upper part of the casing or setting, a number of tiretubes connecting and extending through the chambers, a corresponding number of watertubes, each surrounding one ofthe tire-tubes and opening through the top of the lower chamber and the bottom of the upper chamber, a water-inlet pipe entering the front side of the lower chamber, and ablow-off pipe connected also to said side of the lower chamber, the said pipes extending forwardly through the lire-chamber beneath the grate, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

FRANK SOMMER.

lVitn'esses:

FRANK SEWELL, r F. A. DoRRIs.

TOO

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